Rotary blower



I. H. SPENCERlv ROTARY BLOWER.v

APPLICATION FILED MAY 28, i918.

TORNEY. n

IRA H. SPENCER,

TURBINE COMPANY, OF HARTFORD,

NECTIGUT.

or WEST HAETEORDQCONNECTICUT, AssIGNoE` To THE CONNECTICUT, ACORPORATION SPENCER ROTARY BLOWER.

Specification of Letters Patent. Patented Apr. 27 1920.

'Appiication mea May 2a, 191s. serial No. 236,965.

To all lwhom t may Concern.'

Be it known that I, IRA H.- SPENCER, a citizen of the United States,residing at 1iWest Hartford, in the county of Hartford and State yofConnecticut, have invented a new and 4Improved Rotary Blower, of whichthey following is a specification.

My invention relates to the class of devices above named, and an objectof my invention, among others, is to provide a device of this class thatshall be simple but strong in construction and effective in operation.

One form of device embodying my invention andi in the construction anduse of which the objects herein set out, as well as others, may beattained, is illustrated in the accompanying drawing, in which rtheligure is a view in central vertical section through an apparatusembodying my invention.

ln the accompanying drawing the numeral 5 indicates saddle supportshaving recesses to receive a shell 6 that is preferably round in crosssection and generally cylindrical' except for one end which is cut awayat its upper part. rlhis shell is made of comparatively thin metal andthe cut-away end is reinforced and strengthened by ribs 7 securedagainst the inner and outer surfaces of the shell at the edge thereof. Acleat 8, of L-shape in cross section, extends around the lower portionof the cut-away end of the shell. A supporting ring 9 is secured againstthe inner surface of the shell a short distance from its cut-away end,and a partition plate 10, round and of dishshape, is secured with itsedge against the inner surface of the shell, at a short distance fromthe ring 9, thus creating a groove in which a packing 11 and a packingring 12 `are secured to effectually seal the joint between the partition10 and the inner surface of the shell. The partition 1() creates a motorcompartment 13 within which bed pieces 14 having curved lower edges toconform to the shape of the inner surface of the shell are secured.These bed pieces have flanges 15to which rests 16 are secured, at theupper edges of the bed pieces. When secured by bolts, the latter mayextend through the flanges of a motor 17 that is supported by the restsand within the compartment 13.

as by bolts, r

double-walled structures except those at ths1 A two-part ring 18 issecured to the bounding edge of an opening Centrally through theVpartition plate 10, the facing surfaces of the ring being beveled toconform to the sloping surfaces of the partition plate, and as vshown inFig. 1 of the drawings. A spacing ring 19 having flanges at its oppositeedges is secured against the inner face of the partition 10, this .ringnhaving that edge opposite to the partition plate located practically inthe plane of the inner face of the ring 18.

Fan chambers are located at intervals within the shell, each chamberhaving a discharge opening therefrom extending entirely around itsperiphery, said discharge opening being narrower in width than the fanchamber. These fan chambers and discharge openings are created by a pairof double-walled structures, one wall or plate of each of whichcomprises a wall of the fan chamber and the other wall or plate of eachof which comprises a wall of lthe discharge opening, the last mentionedwalls having beveled lips or flanges bounding the central openingsthrough said plates comprising peripheral walls of the fan chambers.

@ne double-walled structure of a pair is smaller in diameter than theother, as herein shown, said smaller structure consisting of a fanchamber plate 2O and a discharge opening plate 21 spaced apart butsecured together by filling rings 22 secured in any desired manner, onering being preferably located at the periphery of the plates, anotherone surrounding the beveled lip of the central opening in the plate 21,and another located midway between those mentioned. The other and largerdouble-walled structure comprises somewhat larger in diameter than theplate 2O and a discharge opening plate 24 somewhat larger than the plate21 but otherwise of the same general shape. Filling rings 25 are.located between the last mentioned plates in a manner similar to thatabove described with respect to the smaller doublewalled structure.

An inner shell 26 surrounds all of the inlet discharge ends of theapparatus, sai inner shell being spaced from the outer shell as byspacing rings 27. Annular corner pieces 28 are located in the Cornersbetween 0F CON- the inner shell and fan chamber plates of the largerdouble-walled structures, and discharge vanes 29.are secured between thefan chamber plates of two adjacent doublewalled structures,and in areturn chamber between the sets or pairs of double walled structures.nearest the inlet end of the shell is enlarged as at 30, and liesbetween two flanged rings 31 extending entirely around the shell andsecured together as by bolts passing through the flanges of the ringsand thro h said enlarged portion of the discharge c amber plate. Apacking maybe suitably located betweenthese plates to prevent airpassing through the joint. An end plate 32 similar inl shape tothe'partition plate 1 is secured at the inlet end of the structure, aninlet tube 33 extending between and being secured to the fan chamberplate and the end plate at this end of the structure, an

-shaped ring 34 joining the parts at the inner end of said tube and atwo-part ring 35 having beveled meeting faces surrounding the centralopening and receiving the edge thereat of the end plate 32. A clampingring 48 for attachment of a conducting pipe may be secured to the ring35.

A dish-shaped closing plate 36 is secured to a fan chamber plate as bymeans of clips 37 located at intervals about the central opening throughsaid plate. A shaft 38 projects from the motor through said plate andflanged hubs 39 are secured at intervals along the shaft and within thefan chambers. Fan supporting plates 40 are secured to the ia-nges of thehubs and fan blades 41 are secured to said plates at suitable intervalstherearound. The plates 40 are preferably secured in place asby means ofdish-shaped housings 42 inclosing the fan hubs and having openings'closely fitting the shaft and outer lipped edges fitting the supportingplate. The parts may be secured in any suitable manner, screws beingshown herein for this purpose. A ring 49 is secured to the edges of thefan blades of eachA fan, said rings extending inward a short distancefrom the tips of the blades. These tips are narrowed as by cutting offthe corners, and the rings 49 and the supporting plates 40 have beveledflanges 50 51 to correspond in shape with the beveled ends of theblades.

A packing 43 is clamped between a closing plate 44 for the centralopening in the partition plate 1() and va packing plate 45, the partsbeing secured together in any suitable manner, as by means of bolts andnuts as shown herein. Said closing plate has a beveled edge fitting andresting against the sloping surface of the partition plate l() at itsinner edge and between the members of the two-part ring 18 by means ofwhich the closing plate is secured in place. A port 46 The dischargeopening plateextends through the wall of the shell at the outlet endthereof, and a tube extension 47 is secured to the outer surface of theshell surrounding said opening to conduct the .currents of air that passthrough said open- 1n packing 52 is located between the spacing rings 27and a spacer 53 is located between said rings to properly separate them.While the apparatus embodying my invention is named a blower herein, itwill be understood that the invention is present whether the device beemployed to increase or reduce pressure at any point, and in accordancewith the provisions of the patent statutes, I have described theprinciples of operation of my invention, together with the apparatuswhich I now consider to represent the best embodiment thereof; but Idesire to have it understood that the apparatus shown is onlyillustrative, and that the invention may be carried out by other' means.

I claim- 1. A blower comprising a shell, two double-walled partitionslocated within the shell and forming a fan chamber between them, thewalls of each partition being separately formed each from the other andof substantially uniform thickness throughout, a shaft supported withintheshell, and a fan secured to said shaft and located within saidchamber.

2. A blower comprising a shell, two double walled partitions locatedwithin the shell and forming a fan chamber between them, the walls ofeach partition being separately formed each from the other and ofsubstantially uniform thickness throughout, spacers located between saiddouble walls, a shaft supported within the shell, and a fan secured tosaid shaft and located within said chamber.

3. A blower comprising a shell, discharge openings and. return chambersalternately arranged lengthwise ofthe shell, the partitions between saidchambers comprising double-walled structures, each of said walls beingseparately formed from the other and both being of substantially uniformthickness throughout, means for separating the double walls ofeach'partition, a shaft supported within the shell, and a fan secured tosaid shaft and located within fan cham-` bers opening into the dischargechambers.

the shell, and a fan secured to said shaft and located in said chamber.

5. A blower comprising a shell, two double-walled partitions locatedwithin the shell and forming a fan chamber between them, one of each ofsaid double walls having its "inner edge located nearer the axis of theshell than the other double wall and com.- prising one wall of a fanchamber, and the other of each of said double walls comprising one wallof a discharge opening, a shaft supported within the shell, and a fansecured to said shaft and located in said chamber.

6. A blower comprising a shell, two double walled partitions locatedwithin the shell and forming a fan chamber between them, spacersconcentrically arranged and separated between the members of eachdouble-wall, one member of each double wall having its inner edgelocated nearer the axis of the shell than the other member of said walland comprising one wall of a fan chamdouble walls having a beveledy lipat itsy inner edge, a shaft supported within the shell, and a fansecured to said shaft and located in said chamber. i

7. A blower comprising a shell, two double-walled partitions locatedwithin the shell, the walls of Ieach'partition being separately formedeach from the other and of substantially uniform thickness throughoutand one member of each double-walled partition forming one wall of adischarge opening from al fan chamber and the inner edges of said wallsbeing flared outwardly within the fan chamber, a shaft supported withinthe shell, and a fan secured to said shaft and located in said chamber.

8. Ay blower comprising a shell, a plurality of pairs of double-walledpartitions located within the shell, the walls of each partition beingseparately formed each from the other and of substantiallyuniformthickness throughout and one member of each pair being largerthan the other, discharge vanes located between the smaller and largermember of adjacent pairs of partitions, a'shaft supported withinthe-shell, and a fan secured to said shaft arfd located in said chamber.

9. Av blower comprisingl a. shell, a plurality of sets of double-walledpartitions, each set comprising a partition of les/ser diameter than theother partition, curved corner plates located at the corners between theinner surface of the shell and each of said larger partitions, a shaftsupported within the shell, and a fan securedto said shaft and locatedin said chamber.

10. A blower comprisi-ng a shell, a plurality of sets of double-walledpartitions, each se't comprising a partition of lesser diameter than theother partition, one member of adjacent double-walls being flared awayfrom the other member, and the other member of adjacent walls extendingnearer the axis of the shell than said flared members, spacers locatedbetween the doublewalls, curved corner plates located at the cornersbetween the inner surface of the shell and edges of said largerpartitions and curving over the edge of a smaller parti-V tion, ashaftsupported within the shell, and

a fan secured to said shaft and located in said chamber.

11. A blower comprising a shell, two double-walled partitions locatedwithin the shell, the outside members of each of said double wallsextending inwardly beyond the inside members thereof and forming thewithin the shell, one being vlarger in diameter than the others andsecured at the end of the shell, an inner shell spaced from the outershell and resting against the edge of a double-walled partition less indiameter than vsaid end partition, an intermediate double-walledpartition less in diameter than eitherof those first mentioned and'forming with the end partition a fan chamberand a discharge opening, ashaft supported within the shell, and a fan secured to said. shaft andlocated in said chamber.

13. A blower comprising a shell, a plurality of double-walled partitionslocated within the shell, oney of said partitions being larger indiameter than the others and secured at the end of `the shell, an innershell, spacing rings located between the inner and outer shells, apacking located between said rings, a double-walled partition locatedwithin the inner shell and less in diameter than said end partition, anintermediate double-walled partition less-in diameter than either ofthose first mentioned and forming with the end partition a fan chamber',discharge vanes located between the partition of least diameter and thatof the-intermediate diameter, a shaft supported within the shell, and afan secured to said shaft and located within the fan chamber.

.14. A blower comprising a shell, partitions located within said shell,each comprising a double wall with one wall forming part of a fanchamber and the other part of a discharge opening from said fan chamber,the walls of each partition being sepa'- walls of the discharge chamberbeing flared outwardly within the fan chamber, a'shaft extending ilnto.the fan chamber, and a fan comprising blades having their outer edgesnarrowed to conform to the flared edges of the walls of said partitions.l

l5. A blower comprising a shell, partitions located within the shell,each comprising a double wall, one wall of which forms one wall of a fanchamber and the other wall of which forms one wall of a dischargeopening, the inner edges of the walls of the discharge chamber beingflared Within the fan chamber, a shaft extending within the fan chamber,and a fan secured to said shaft and comprising a supporting plate havinga beveled flange to conform to the fiaring edges of said walls, fanblades secured to the plate and having their ends conforming to thebeveled flange of said plate, the opposite edges of said blades beingalso be'veled at their tips, and a ring secured to the outer edges ofsaid blades and hav-ing its outer edge beveled to correspond to theshape of the beveled ends of said blades and to conform to the flarededges of said walls.

16. A blower comprising a shellfa dishshaped plate forming one wall of achamber' within the shell and having a central opening, a two-part ringhaving sloping facing surfaces and secured on opposite sides of. saidplate at the edge of said opening, means for supporting said two-partring, a shaft supported within the (shell, and a fan secured to saidAshaft.

17. A blower comprising a shell;` a dishshaped plate dividing the shellinto two compartments and having an opening at its center, a plate toclose said opening and having a beveled edge to conform to the slopingsurface of the dish-shaped plate, a twopart ring having sloping facingsurfaces se- -cured to the opposite sides of said dishshaped plate andsaid closing plate, a shaft supported within the shell, and a fansecured to said shaft.

18. A blower comprising a shell, two double-w alled partitions locatedwithin the shell and forming a fan chamber between them, onemember-ofeach of said double walls having its inner edge located nearer the axisof the shell than the other member of said double wall and comprisingone wall of a fan chamber, and the other member of each of said doublewalls having a central opening with the edge thereof flared outwardly toform a peripheral wall of said fancchamber, a shaft supported within theshell, and a fan` -secured to said shaft and located in said chamber.

19. A blower comprising a shell, two double-walled partitions locatedwithin the shell and forming a fan chamber between them, spacersconcentrically arranged and separated between the members of `eachdouble wall one member of each double wall .having its inner edgelocated nearer the axis of the shell than the other member of said walland comprising one wall of a fan chamber, a shaft supported within theshell, and a fan secured to said` shaft and located in said chamber.

. 20. A blower comprising a shell, a plurality of ldouble walledpartitions located within the shell, one being larger in diameter thanthe other, an inner shell spaced from the outer shell and inclosing saidlarger partition that is secured at its edge to the inner surface ofsaid inner shell, a smaller partition locatedA within the inner shelland having its edge spaced from the inner surface of said inner shell,said smaller partition forming one wall of a fan chamber, a second wallfor said fan chamber,"a shaft supported within said blower, and .a fansecured to said shaft within said fan chamber.

a IRA H. SPENCER.

